<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单区域 -->
      <el-form
        :model="loginForm"
        label-width="0px"
        class="el-form"
        :rules="loginFormRules"
        ref="loginFormRef"
      >
        <!-- 用户名 -->
        <el-form-item class="el-item" prop="username">
          <el-input
            prefix-icon="el-icon-user"
            v-model="loginForm.username"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            prefix-icon="el-icon-lock"
            v-model="loginForm.password"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-button type="primary"  @click="login"
          >登录</el-button
        >
        <el-button type="info" class="el-button" @click="resetLoginForm"
          >重置</el-button
        >
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: "Login",
  data() {
    return {
      // 登录表单的数据绑定对象
      loginForm: {
        username: "admin",
        password: "123456",
      },
      // 表单的验证规则对象
      loginFormRules: {
        username: [
          { required: true, message: "请输入登录名称", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "长度在 3 到 10 个字符",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入登录密码", trigger: "blur" },
          {
            min: 6,
            max: 13,
            message: "长度在 6 到 13 个字符",
            trigger: "blur",
          },
        ],
      },
    };
  },
  methods: {
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields();
    },
    login() {
      this.$refs.loginFormRef.validate(async (valid) => {
        // console.log(valid);
        if (!valid) return;
        const { data: res } = await this.$http.post("login", this.loginForm);
        // console.log(res);
        if (res.meta.status != 200)
          return this.$message.error("登录失败！请输入正确的账号和密码");
        this.$message.success("登录成功！");
        // 1.将登录成功之后的token保存到客户端的sessionStorage中（后续接口在登录之后才能使用）
        window.sessionStorage.setItem("token", res.data.token);
        // 2.登录成功后跳转到后台主页
        this.$router.push("/home");
      });
    },
  },
};
</script>

<style Lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: relative;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar_box {
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
}
.avatar_box img {
  width: 100%;
  height: 100%;
  background-color: #eee;
  border-radius: 50%;
}
.el-form {
  position: absolute;
  transform: translate(-50%);
  left: 50%;
  top: 82px;
}
.el-item {
  /* height: 16px; */
  width: 300px;
}
.el-button {
  /* font-size: 12px; */
  /* height: 16px; */
  width: 100px;
  transform: translate(50%);
}
</style>>


